#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>

int main() {
    int n = 0;
    scanf("%d", &n);
    if (n < 4)
    {
        printf("Good\n");
    }
    else if (n < 10)
    {
        printf("Danger\n");
    }
    else
    {
        printf("Danger++\n");
    }
    return 0;
}